Working barrel for pumps.



0. A. WAITZ. WORKING BARREL FOE PUMPS.

APPLIQATIOE FILED APRUQL 1911.

Patented N (W. 28, 1911.

amen Wow CHARLE$ A WAI'TZ To all whont 'it concern:

". Be it known that I, CHARLES -A. WAI'IZ, c tizen. of the United States, residing at Rouseville, in the county of Venango and 5 Stateof Pennsylvania, have invented certain new and useful Improvements in VVorkingBarrelsfor Pumps, of which the followeasily placed inand. withdrawn from the welL'.

I will nowexplain the construction of my improved" working barrel-and will then point out wherein the same is an improve ment over the barrels now in common use.

I The drawing is an elevation partly in central longitudinal section of myimproved working barrel.

.In constructing my barrel I employ a joint of tubing 1, which maybe of any suitable length, but preferably is the regulation,

commercial length, as it comes froin the mill, and so far as myinvention is concerned, any diameter may be used, but, of course, in making barrels for use in oil wells, diameters will be employed which conform to the usual practice in this line of work. Tubing 1 is externally threaded at both ends, in the usual manner and is preferably, not onlyidentical with, but a portion of the tubing proper used in the well. \Vithin one end (the lower end) of said tubing I insert a liner composed of a comparatively short section of tubing orpipe 2, the upper end of which is-preferably swaged out or in any other way suitably formed so that it will afford a smooth and easy entrance for the plunger or piston which operates therein and will also maintain the concentricity ofthe upper end of the liner and the tubing. The diameter of said liner 2 is such that there is more or less space between the periphery of same and the inner wall of the tubing 1, but so far as my inventive idea is concerned, the exact amount of said space is immaterial, it may vary from a-minute fraction of an inch, up to a considerable amount, but practically and as a manufacturing. expedient it is, at least, such'as will ermit an easy and quick assembly of the I arrel and liner. Liner 2 projects somewhat "woR I'ivenAnRnrj'rqn f harnes nousEvrLLn- Ly limli f Serial No;- 622,577;

holding them relatively in a concentric position at the lower end; said collar also serves as-a coupling for the attachment of addi-- tional tubing or an anchor to the lower end of the barrel. Preferably before collar- 3 is attached, I pour into the annular space between the tubing and liner a filler v4,

which, so far as my inventive idea is concerned, maybe any suitable substance, such as metal having a low-melting point and poured in in a molten state, or pitch, also poured iuin a molten-state; it may be fine sand, powdered graphite, soapstone or any other suitable, finely powdered material, or it may be a liquid. In case the filler is liquid the space may be arranged to fill autoinatically the liquid,--oil or water- I rises in the'jtnbingduring the pumping opcr= ation after the barrel'is in place in the well. All of these filling substances and the method of inserting them beingwit'hin the" scope of my invention. The object of said filler is to strengthen and support the liner 2 and to prevent the same from being expanded by. the weight and pressure of the column of fluid within. the'tubing, and the automatic method above stated is an ideal way of attaining this object, as the pressure upon the inside and the outside of the liner are thus automatically balanced, regardless of the amount of such pressure. Gollar 3 is provided with a seat 5 for a check valve of the usual type commonly termed the standing valve. Tubing l is provided at its upper end with a thread for the recep-' tion of a collar or coupling,not shown for the attachment of the balance of the well tubing. Tubing 1 will usually be of the same diameter as the rest of the tubing emother diameter, as desired.

ployed in the well, though it may be any The advantages of my improved working i barrel over those of the usual form are quite numerous. For instance, the common form of barrel is short, and as its position in the well is nearly always in the shot-hole, it is not supported laterally by the walls of the well and the weight of the superimposed tubing is lilu-lr and frequently does cause it to-break in .he joint, whereas,- Iny barrel,

" the walls of the .well cave in, which is a common occurrence.

The comparatively small expense to manufacture my improved form of barrel is an important point of advantage over those' incommon use, many of which are expen- 115,1 1

sive u to manufacture.

I claim:

1. In a working barrel for pumps, the

combination with the tubing proper of "a well, of asupplementary section of tubing positioned within and attached to the lower end' of saidwell tubing, the upper end of said supplementary tubingbeing formed so as; to contact with the inner wall of said well tubing, for the. purpose of maintaining the concentricity of said well and supplementary tubing, and means at the lower end of said well and supplementary tubing securing the same together.

2. Ina working barrel for pumps, the

.combination with the tubing proper of a well, of a supplementary section of tubing of smaller external diameter than the internaldiameter of said well tubing, positioned within the lower end of said well tubing, the upper end of said supplementary tubing being adapted to secure the concentricity thereof with said well tubing, means securing the' lower end of said tubes together 'and a filling material occupying the space between the juxtaposed walls of said well and su 'aplementary tubing.

In testimony whereof I aflix the signature in presence of two witnesses.

[CHARLES A. WAITZ.

Witnesses: 4 r

J ossrmm: \VIxANs, 'ICATHERYN Lynn. 

